Form for making fireproof floor constructions



June 21, 1932. c, G UB FORM FOR MAKING FIREPROOF FLOOR CONSTRUCTIONSFiled June 27'. 1928 2 Sheets-Sheet l June 21, 1932. c, E, GRUBER1,864,043

FORM FOR MAKING FIREPROOF FLOOR CONSTRUCTIONS Filed June 27, 1928 2Sheets-Sheet 2 79 J fia/a- 5 79 79 /ar P/VE y Patented June 21, 1932 TEDSTATES CLARENCE E. GR'UIBER, OF CANTON, OHIO, ASSIGNOR TO THEMACOMIBEIR, STEEL GOM- PANY, OF CANTON, OHIO, A CORPORATION OF OHIO YFORM FOR MAKING FIBELPLROOF rrloon CQNSTRUCTIONS Application filed me27,

skeleton domes comprised of rod sections The advantages of myconstruction consist in light weight, economical production,.easyassembly and removal, an openwork construction which is convenient forinstallation of water pipes, utility conduits, etc., and very convenientnesting for easy storage and transportation. Also,single domes serve fora complete span between main girders with"- out the necessity of lappinga plurality of domes between girders; and, in some cases,

without the necessity of intermediate supports. i l

v The annexed drawings and thefollowing description set forth in detailcertain means exemplifying my invention such disclosed meansconstituting, however, but one of the various forms in whichtheprinciple of my I invention may be embodied. In said annexed drawings:

Figure 1 is a side elevation of one type of my improved form;

Figures 2 and 3 are,respectively,plan and .end views of the form shownin Figure 1; Figure 4 is a perspective view illustrating the method ofusing the aforesaid form as a permanent part of the floor;

Figure 5 is a cross-section through a floor .partially completed and forthe forming of which my improved type of form is being used as aremovable form; 7

Figures 6, 7 and 8 are respectively a side elevation. a plan view and anend elevation of a modified type of form;

Figure 9 is a modified type of outer frame of one of the form units;

Figure 9a is a perspective viewof a modi- {led type of intermediatecross frame memer:

Figure 9b is a side'elevation of a form provided with the outer frameshown in Figure 9 and with cross members of the type shown in Figure 9a.

Figures 10 and 11 are respectively a side elevation and an end elevationofaform.

1925. Serial No. 288,599.

similar to that shown in Figures 6,7 and 8, but in which the height ofthe frame is materially greater;

Figures 12,13 and '14 are respectively a side elevation, a plan view andan end elevation of a further modified or truss type of form;-' M

Figure 15 is a perspective view illustrating the method "of using thetruss type of form shown in Figures 12, 13 and 14;

Figure 16 is a cross-section through a partially completed floor inwhich the type of form shown in Figure 15 is being used; and

Figure 17' is a perspective view of an extra end frame used in the typeof form shown in Figures 12, 13 and 14.

Referring to the annexed drawings in which the same parts are indicatedby the.

same respective ordinals in the several views, the type of floorformshown in Figures 1, 2, 3. 4 and 5, is a skeleton frame comprised ofupper longitudinal side rods 1, intermediate upper longitudinal rods 2and lower longi tudinal side rodsv3 united'by spaced cross frame members4 consisting each of upper horizontal sections 5 and outwardly.diverging and downwardly extending side sections 6. all as plainly showninFig'ures 1, 2 and 3. The several'rod members are suitably securedtogetherto form the complete skeleton frame, preferably by welding. Theframes thus formed in suitable lengths "are mounted at their lower sideedges upon planks 7, Figure 4-. the latter being supported at their endsupon girder forms '8, and also suitably supported intermediate theirends. the several skeleton frames being laterally so spaced and disposedas to form between the adj acent frame members 6 a channel 9 ofdimensions suitable for the concrete floor ioist-12 which is desired.Reinforcing rods 11 for the joist 12 are positioned in thechannels 9 inany suitable manner well known to the art As a sup- 7 port for theconcrete andto prevent the same being lost through the skeleton frame,water-,

proof paper. canvas. metal lath, thin metal sheets, or other suitableflexible material 10 which will take the form shape without any specialshaping operation; ismounted upon the skeleton frames, this cover ngmaterial 10 being extended over the open ends of each skeleton frame.The pouring of the concrete results in the fireproof floor 13 withconcrete joist 12, shown in Figure 5. The openwork forms are thenreadily removable from below after the concrete is properly set. Ifconditions or the desired installation require, a covering material 10is used which is preshaped to conform to the shape of the skeletonframe.

If it is desired to provide for a ceiling, flush with the concrete joist12 or suspended, wire hangers 14 are suspended from the reinforcing rods11 before the concrete is poured, from which wires 14: suitable metalmesh 21 is susended, after the skeleton forms are removed,

igure 5. If the forms are intended for permanent location in the floorconstruction, the metal mesh 21 is suspended by the hangers 14 beforethe concrete is poured, as illustrated in Figure 4c. The desired ceilingcan be formed around and through the metalmesh 21 and bonded and keyedtherewith.

The modification of Figures 6, 7 and 8 consists in staggering the crossframe members 4 relative to the longitudinal side rods 1 and 3 so as toprovide a series of frame members 15 secured to said rods 1 and 3 uponone side and staggered with a series of frame members 16 secured to saidrods upon the other side, noted.

Referring particularlyto Figure 9,1 thereall as plainlyshownin thefigures in show a rod so bent as to form the entire outer frame memberof one of the forms shown in Figures 1. 2 and 3. This number thuscomprises the two end cross frames 4: and the two lower longitudinalrods 3 all as one integral member, each end frame 4' being comprised ofthe cross member 5 and the pair of diverging side members 6, the lowerend of one side member 6 of one frame end 4' being welded to the otherend 17 of the original rod from which this outer frame member is made.

In Figure 9a there is shown a special form of intermediate cross framemember for the type of dome shown in Figures. 1, 2 and 3, whichcomprises two spaced cross members 5 eachhaving a pair ofdivergingdownwardly extending side members 20 these side members 20 ofthe two cross members 5 converging respectively toward each other, thewhole being comprised of a single rod memberbent into the shape plainlyshown in Figure 9a and the ends of which are welded together at 23. Askeleton frame comprised of the outer frame member shown in Figure 9 anda plurality of cross frame members,such as shown in Figure 9a, isillustrated in F igure 9?). ,7 i

In Figures 10 and 11, theopenwork frames are madeso deep that anadditional pairof longitudinal side rods 18 is used, the same {beingdisposed between the staggered'members 15' and 16 and midway of thedistance between the upper side rod 1 and the lower side rod 3.

Referring particularly to Figures 12, 13 and 14, the form of frametherein shown is a self-sustaining truss type such that no temporarysupports between girder forms, such as the timbers 7, Figure 4., arerequired. This truss frame is provided with diagonal side strengtheningmembers 20 disposed between each adjacent pair of side members 6 eachcross frame 4 comprised of the upper horizontal member 5 and the pair ofdiverging side members 6 being provided withextending foot portions 19which are of a lengthvso as to provide for a material lapping of'adjacent feet 19 when the forms are assembled as shown in Figure 15,preparatory to pouring the concrete. These extended portions 19 supportthe flexible covering material. 10. This truss frame of Figures 12, 13and 141- is further braced and strengthened with additional end framemembers 4 one of which is plainly shown in Figure 17, and which areduplicates of the normal cross frame members, so that each end of theframe is formed of two cross frame members.

In Figure 15 is illustrated the use of the truss type of dome as aremovable form, provided a suspended ceiling is desired; and in Figure16 is illustrated the use of this type of dome as a permanent form,,thewire mesh 21 being suspended by the tie wires 14 before heconcrete ispoured.

Figures 1, 2, 6, 7, 9, 9b, 10, 12 and 13 show short lengths of forms orfragments of lengths, but it will be understood that these, forms can bemade in any reasonable lengths. The lengthis preferably a multiple ofthe distance between two cross frames. The length is also usuallysufficient to span the distance between two girders. Such a spanninglength is the preferred construction in the case of the formsillustrated in Figures 1, 2, 3, 6, 7,8, 9?), 10 and 11, and would be thenecessary construction in the case of the form illustrated in Figures12, 13, let and 15.

.What I claim is:

1. A form for making fireproof floor construction. comprising anopenwork skeleton metal frame having spaced upper longitudinal side andintermediate bars, spaced lower longitudinal side bars, and spacedtransverse bars secured to said longitudinal bars, said transverse barsbeing arranged in staggered relation upon the inside and outside of saidlongitudinal side bars, material for said frame.

. 2. In a form for making fireproof floors. an op'enwork channel-shaped,frame having the face of the channel unobstructed, the

sides of the frame diverging toward the face of the channel whereby aplurality of frames may be nested when not in use.

and flexible covering 3. In a form for making fireproof floors, anopenwork frame having spaced longitudinal metal bars rigidly secured tospaced transverse metal bars of substantially inverted U-shape, two ofsaid longitudinal bars connecting the ends of the transverse bars andthe other longitudinal bars connecting the intermediate portions of thetransverse bars, and the space between said two longitudinal bars beingunobstructed whereby a plurality of frames may be nested when not inuse.

4. In a form for making fireproof floors, an openwork channel-shapedframe having the face of the channel unobstructed, the sides of theframe diverging toward the face of the channel whereby a plurality offrames may be nested when not in use, and said frame comprisingtransverse elements having leg portions each formed of angularly relatedmembers and forming part of the sides of the frame.

5. In a form for making fireproof floors, an openwork frame comprising amember having spaced longitudinal portions connected at their ends bytransverse portionsof substantially inverted U-shape, longitudinalmembers secured to said transverse portions of said first-mentionedmember, and

' an intermediate transverse member of substantially inverted U-shape,said intermediate transverse member being secured to the longitudinalportions of the first mentioned member and to said longitudinal membersand having each of its leg portions formed of angularly relatedelements, said transverse portions and said transverse member divergingdownwardly, and the space between said longitudinal portions and betweenthe leg portions of said transverse portions and of said transversemember being unobstructed.

6. In a form for making fireproof floors, an openwork channel-shapedframe having the face of the channel unobstructed, the sides of theframe diverging toward the face of the channel whereby a plurality offrames may be nested when not in use, andsaid frame having membersextending transversely and outwardly from the frame sides near the openface of the channel.

7. In a form for making fireproof floors, an openwork frame havingspaced upper and low-er longitudinal bars and spaced transverse barssecured to said longitudinal bars,

said transverse bars each having an intermediate portion ofsubstantially inverted U-shape and having end portions extendingoutwardly from the ends of the inverted U-shaped portion, the legportions of each intermediate portion diverging downwardly, and thespace below said upper longitudinal bars and between said lowerlongitudinal bars being unobstructed.

8. A form for making fireproof floors comstructions, an openwork framecomprising spaced upper longitudinal bars, spaced lower longitudinalbars, and spaced transverse bars substantially of inverted U-shapesecured to said longitudinal bars, said transverse bars having their legportions diverging downwardly toward said lower longitudinal bars andthe space between said lower longitudinal bars being open whereby aplurality of frames may be nested when not in use, and

said frame having members extending trans versely and outwardly beyondthe lower longitudinal bar at one of its lower edges.

10. A form for making fireproof floor constructions comprising anopenwork skeleton frame formed of metal bars secured together, saidframe having a top and two opposed divergent sides, and flexiblematerial covering the top and sides of the frame when the form is inuse, space below the top and between the divergent sides being openwhereby a plurality of frames may be nested when not in use.

11. A form for making fireproof floors comprising openworkchannel-shaped frames arranged side by side in spaced relation, eachframe having the face of the channel unobstructed and having its sidesdiverging toward the face of the channel whereby a plurality of framesmay be nested when not in use, and a flexible material covering the topsand sides of said frames and extending across the space between thebottoms of adjacent frames.

12. A form for making fireproof floors comprising openwork frames, eachof said frames having an intermediate portion substantially of invertedchannel shape and side portions extending outwardly from the lower edgesof the intermediate portion, each frame having its channel sidesdiverging downwardly and its channel face unobstructed, and adjacentframes being arranged side by side with a side portion of one framelapping the adjacent side portion of an adjacent frame, and flexiblematerial covering the tops and sides of the intermediate portions of theframes and the lapping side portions thereof.

Signed by me this 22nd day of June, 1928.

CLARENCE E. GRUBER.

